Any Of Various Permanent Upright Constructions Having A Length Much Greater Than The Thickness And Presenting A Continuous Surface Except Where Pierced By Doors, Windows, Etc.: Used For Shelter, Protection, Or Privacy, Or To Subdivide Interior Space, To Support Floors, Roofs, Or The Like, To Retain Earth, To Fence In An Area, Etc.

A Rampart Raised For Defensive Purposes.

An Immaterial Or Intangible Barrier, Obstruction, Etc., Suggesting A Wall: A Wall Of Prejudice.

A Wall-like, Enclosing Part, Thing, Mass, Etc.: A Wall Of Fire; A Wall Of Troops.

An Embankment To Prevent Flooding, As A Levee Or Sea Wall.

The Outermost Film Or Layer Of Structural Material Protecting, Surrounding, And Defining The Physical Limits Of An Object: The Wall Of A Blood Cell.

A Line Of Defenders Standing Shoulder To Shoulder In An Attempt To Block A Free Kick With Their Bodies.

As adjective

Of Or Relating To A Wall: Wall Space.

Growing Against Or On A Wall: Wall Plants; Wall Cress.

Situated, Placed, Or Installed In Or On A Wall: Wall Oven; A Wall Safe.

As verb (used with object)

To Enclose, Shut Off, Divide, Protect, Border, Etc., With Or As If With A Wall (often Followed By In Or Off): To Wall The Yard; To Wall In The Play Area; He Is Walled In By Lack Of Opportunity.

To Seal Or Fill (a Doorway Or Other Opening) With A Wall: To Wall An Unused Entrance.

To Seal Or Entomb (something Or Someone) Within A Wall (usually Followed By Up): The Workmen Had Walled Up The Cat Quite By Mistake.

As i

To Become Tense Or Frantic: Climbing The Walls With Boredom.

To Force Into A Desperate Situation; Humiliate Or Ruin Completely: Not Content With Merely Winning The Match, They Used Every Opportunity To Push The Inferior Team To The Wall.

To Break Out Of Prison: Roadblocks Have Been Set Up In An Effort To Capture Several Convicts Who Went Over The Wall.

(of Long-distance Runners) To Reach A Point In A Race, Usually After 20 Miles, When The Body's Fuels Are Virtually Depleted And Willpower Becomes Crucial To Be Able To Finish.

Into An Acutely Frantic, Frustrated, Or Irritated State: The Constant Tension In The Office Is Driving Everyone Up The Wall.